Hanna Vihervaara

- Clinical Lecturer
- Doctoral Researcher
Surgery (Department of Clinical Medicine)

harevi@utu.fi

Clinical Frailty Scale predicts overall survival after colon cancer surgery in people aged 80 years and older: A prospective multicentre observational study (2025)
- Colorectal Disease
Niemeläinen, Susanna; Hyöty, Marja; Ehrlich, Anu; Jämsen, Esa; Koskensalo, Selja; Kössi, Jyrki; Pinta, Tarja; Vihervaara, Hanna; Huhtala, Heini
Laparoscopic cholecystectomy versus antibiotic therapy for acute cholecystitis in patients over 75 years: Randomized clinical trial and retrospective cohort study (2023)
- Scandinavian Journal of Surgery
Kivivuori Antti, Salminen Paulina, Ukkonen Mika, Ilves Imre, Vihervaara Hanna, Zalevskaja Kristina, Pajari Jenni, Paajanen Hannu, Rantanen Tuomo
One-year functional outcomes of patients aged 80 years or more undergoing colonic cancer surgery: prospective, multicentre observational study (2022)
- BJS Open
Niemeläinen Susanna, Huhtala Heini, Jämsen Esa, Kössi Jyrki, Andersen Jan, Ehrlich Anu, Haukijärvi Eija, Koikkalainen Suvi, Koskensalo Selja, Mattila Anne, Pinta Tarja, Uotila-Nieminen Mirjami, Vihervaara Hanna, Hyöty Marja
The Clinical Frailty Scale is a useful tool for predicting postoperative complications following elective colon cancer surgery at the age of 80 years and above: A prospective, multicentre observational study (2021)
- Colorectal Disease
Niemeläinen Susanna, Huhtala Heini, Andersen Jan, Ehrlich Anu, Haukijärvi Eija, Koikkalainen Suvi, Koskensalo Selja, Kössi Jyrki, Mattila Anne, Pinta Tarja, Uotila-Nieminen Mirjami, Vihervaara Hanna, Hyöty Marja, Jämsen Esa
Perioperative EOX treatment in operable locally advanced gastroesophageal adenocarcinoma: Prediction of tumor response by FDG-PET and histopathology (2019)
- Surgical Oncology
Vihervaara Hanna, Ålgars Annika, Kemppainen Jukka, Sundström Jari, Ristamäki Raija, Salminen Paulina
Antireflux Versus Conventional Plastic Stent in Malignant Biliary Obstruction: A Prospective Randomized Study (2017)
- Journal of Laparoendoscopic and Advanced Surgical Techniques
Vihervaara H, Grönroos JM, Hurme S, Gullichsen R, Salminen P
Feasibility of the Novel 3-Step Protocol for Biliary Cannulation-A Prospective Analysis (2012)
- Surgical Laparoscopy, Endoscopy and Percutaneous Techniques
Vihervaara H, Grönroos JM
Double-guidewire-assisted biliary cannulation: experiences from a single tertiary referral center (2011)
- Surgical Endoscopy
Grönroos J M, Vihervaara H, Gullichsen R, Laine S, Karvonen J, Salminen P
Female gender and post-ERCP pancreatitis: Is the association caused by diffucult cannulation? (2011)
- Scandinavian Journal of Gastroenterology
Vihervaara H, Salminen P, Hurme S, Gullichsen R, Laine S, Grönroos JM